NDLI: Compost benefits for agriculture evaluated by life cycle assessment. A review

Content Provider	Springer Nature Link
Author	Martínez Blanco, Julia Lazcano, Cristina Christensen, Thomas H. Muñoz, Pere Rieradevall, Joan Møller, Jacob Antón, Assumpció Boldrin, Alessio
Copyright Year	2013
Abstract	As compost use in agriculture increases, there is an urgent need to evaluate the specific environmental benefits and impacts as compared with other types of fertilizers and soil amendments. While the environmental impacts associated with compost production have been successfully assessed in previous studies, the assessment of the benefits of compost on plant and soil has been only partially included in few published works. In the present study, we reviewed the recent progresses made in the quantification of the positive effects associated to biowaste compost use on land by using life cycle assessment (LCA). A total of nine environmental benefits were identified in an extensive literature review and quantitative figures for each benefit were drawn and classified into short-, mid-, and long-term. The major findings are the following: (1) for nutrient supply and carbon sequestration, the review showed that both quantification and impact assessment could be performed, meaning that these two benefits should be regularly included in LCA studies. (2) For pest and disease suppression, soil workability, biodiversity, crop nutritional quality, and crop yield, although the benefits were proved, quantitative figures could not be provided, either because of lack of data or because the benefits were highly variable and dependent on specific local conditions. (3) The benefits on soil erosion and soil moisture could be quantitatively addressed, but suitable impact assessment methodologies were not available. (4) Weed suppression was not proved. Different research efforts are required for a full assessment of the benefits, apart from nutrient supply and carbon sequestration; additional impact categories—dealing with phosphorus resources, biodiversity, soil losses, and water depletion—may be needed for a comprehensive assessment of compost application. Several of the natural mechanisms identified and the LCA procedures discussed in the paper could be extensible to other organic fertilizers and compost from other feedstocks.
Starting Page	721
Ending Page	732
Page Count	12
File Format	PDF
ISSN	17740746
Journal	Agronomy for Sustainable Development
Volume Number	33
Issue Number	4
e-ISSN	17730155
Language	English
Publisher	Springer Paris
Publisher Date	2013-06-04
Publisher Institution	Institut National de la Recherche Agronomique (INRA)
Publisher Place	Paris
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sustainable agriculture Environmental impact Organic fertilizer Biowaste Soil organic matter C sequestration Disease suppression Soil quality Agriculture Soil Science & Conservation Sustainable Development
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Agronomy and Crop Science

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